On Wed, Aug 01, 2012 at 11:34:23AM +0200, Petar Hitij wrote: > Hello, > I need to listen to many multicast addresses in a vserver. > I can use max 16 ip numbers in /etc/vservers/vservername/interfaces/. > The host is running an older Debian kernel 2.6.18. first you have to figure out _what_ Linux-VServer patch was used in that kernel, because if it actually is a 2.6.18 with unmodified patches it must be vs2.0, vs2.1 or vs2.2, which all have a hardwired kernel limit of 16 IPs for the network isolation context. you can grep for NB_IPV4ROOT in the kernel source, this will give you the limit if present. > If possible without upgrade :). you can always backport changes from vs2.3 or simply raise the hardcoded limit to your requirements, but in any case you need to rebuild the kernel. HTH, Herbert > Regards > Petar Hitij > # vserver-info > Versions: > Kernel: 2.6.18-6-vserver-amd64 > VS-API: 0x00020002 > util-vserver: 0.30.215; Jun 18 2010, 13:35:17 > > Features: > CC: gcc, gcc (Debian 4.4.4-5) 4.4.4 > CXX: g++, g++ (Debian 4.4.4-5) 4.4.4 > CPPFLAGS: '' > CFLAGS: '-Wall -g -O2 -std=c99 -Wall -pedantic -W > -funit-at-a-time' > CXXFLAGS: '-g -O2 -ansi -Wall -pedantic -W > -fmessage-length=0 -funit-at-a-time' > build/host: x86_64-pc-linux-gnu/x86_64-pc-linux-gnu > Use dietlibc: yes > Build C++ programs: yes > Build C99 programs: yes > Available APIs: v13,net,v21,v22,v23,netv2 > ext2fs Source: e2fsprogs > syscall(2) invocation: alternative > vserver(2) syscall#: 236/glibc > crypto api: nss > python bindings: no > use library versioning: yes > > Paths: > prefix: /usr > sysconf-Directory: /etc > cfg-Directory: /etc/vservers > initrd-Directory: $(sysconfdir)/init.d > pkgstate-Directory: /var/run/vservers > vserver-Rootdir: /var/lib/vservers